arg ! The problem has comed back
I have resolved the problem by removing all cookies related to my website.
I have posted a comment on the same problem on a other thread : http://wordpress.org/support/topic/59365?replies=15
Similar situation for me after installation of WP 2.01 on a server which had supported successfully a WP 1.51.
The 500 error happens when trying to log as admin.
I have encounter the same problem yesterday when installing a joomla web site, and when trying to log in as admin !!
I solved the joomla-related problem by creating manualy the ‘sessions’ folder. This folder stores sessions infos. On my remote server, le PHP script is not allowed to mkdir or rmdir. This causes the problem.
Unfortunatly, I don’t know which directory I should manualy create for WP. Perhaps someone knows … ?
